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1041 lines
33 KiB
1041 lines
33 KiB
// -*- mode: cpp; mode: fold -*-
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// Description /*{{{*/
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// $Id: deblistparser.cc,v 1.29.2.5 2004/01/06 01:43:44 mdz Exp $
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/* ######################################################################
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Package Cache Generator - Generator for the cache structure.
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This builds the cache structure from the abstract package list parser.
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##################################################################### */
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/*}}}*/
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// Include Files /*{{{*/
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#include <config.h>
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#include <apt-pkg/deblistparser.h>
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#include <apt-pkg/error.h>
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#include <apt-pkg/configuration.h>
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#include <apt-pkg/cachefilter.h>
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#include <apt-pkg/aptconfiguration.h>
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#include <apt-pkg/strutl.h>
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#include <apt-pkg/crc-16.h>
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#include <apt-pkg/md5.h>
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#include <apt-pkg/pkgcache.h>
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#include <apt-pkg/cacheiterators.h>
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#include <apt-pkg/tagfile.h>
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#include <apt-pkg/macros.h>
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#include <stddef.h>
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#include <string.h>
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#include <algorithm>
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#include <string>
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#include <vector>
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#include <ctype.h>
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/*}}}*/
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using std::string;
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using APT::StringView;
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static const debListParser::WordList PrioList[] = {
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{"required",pkgCache::State::Required},
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{"important",pkgCache::State::Important},
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{"standard",pkgCache::State::Standard},
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{"optional",pkgCache::State::Optional},
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{"extra",pkgCache::State::Extra},
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{NULL, 0}};
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// ListParser::debListParser - Constructor /*{{{*/
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// ---------------------------------------------------------------------
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/* Provide an architecture and only this one and "all" will be accepted
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in Step(), if no Architecture is given we will accept every arch
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we would accept in general with checkArchitecture() */
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debListParser::debListParser(FileFd *File) :
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pkgCacheListParser(), d(NULL), Tags(File)
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{
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}
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/*}}}*/
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// ListParser::Package - Return the package name /*{{{*/
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// ---------------------------------------------------------------------
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/* This is to return the name of the package this section describes */
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string debListParser::Package() {
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string Result = Section.Find("Package").to_string();
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// Normalize mixed case package names to lower case, like dpkg does
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// See Bug#807012 for details
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std::transform(Result.begin(), Result.end(), Result.begin(), tolower_ascii);
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if(unlikely(Result.empty() == true))
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_error->Error("Encountered a section with no Package: header");
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return Result;
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}
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/*}}}*/
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// ListParser::Architecture - Return the package arch /*{{{*/
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// ---------------------------------------------------------------------
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/* This will return the Architecture of the package this section describes */
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string debListParser::Architecture() {
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auto const Arch = Section.Find("Architecture");
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return Arch.empty() ? "none" : Arch.to_string();
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}
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/*}}}*/
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// ListParser::ArchitectureAll /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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bool debListParser::ArchitectureAll() {
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return Section.Find("Architecture") == "all";
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}
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/*}}}*/
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// ListParser::Version - Return the version string /*{{{*/
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// ---------------------------------------------------------------------
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/* This is to return the string describing the version in debian form,
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epoch:upstream-release. If this returns the blank string then the
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entry is assumed to only describe package properties */
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string debListParser::Version()
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{
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return Section.Find("Version").to_string();
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}
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/*}}}*/
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unsigned char debListParser::ParseMultiArch(bool const showErrors) /*{{{*/
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{
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unsigned char MA;
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auto const MultiArch = Section.Find("Multi-Arch");
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if (MultiArch.empty() == true || MultiArch == "no")
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MA = pkgCache::Version::No;
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else if (MultiArch == "same") {
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if (ArchitectureAll() == true)
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{
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if (showErrors == true)
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_error->Warning("Architecture: all package '%s' can't be Multi-Arch: same",
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Section.FindS("Package").c_str());
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MA = pkgCache::Version::No;
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}
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else
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MA = pkgCache::Version::Same;
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}
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else if (MultiArch == "foreign")
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MA = pkgCache::Version::Foreign;
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else if (MultiArch == "allowed")
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MA = pkgCache::Version::Allowed;
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else
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{
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if (showErrors == true)
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_error->Warning("Unknown Multi-Arch type '%s' for package '%s'",
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MultiArch.to_string().c_str(), Section.FindS("Package").c_str());
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MA = pkgCache::Version::No;
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}
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if (ArchitectureAll() == true)
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MA |= pkgCache::Version::All;
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return MA;
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}
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/*}}}*/
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// ListParser::NewVersion - Fill in the version structure /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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bool debListParser::NewVersion(pkgCache::VerIterator &Ver)
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{
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const char *Start;
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const char *Stop;
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// Parse the section
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if (Section.Find("Section",Start,Stop) == true)
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{
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map_stringitem_t const idx = StoreString(pkgCacheGenerator::SECTION, Start, Stop - Start);
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Ver->Section = idx;
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}
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// Parse the source package name
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pkgCache::GrpIterator const G = Ver.ParentPkg().Group();
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Ver->SourcePkgName = G->Name;
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Ver->SourceVerStr = Ver->VerStr;
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if (Section.Find("Source",Start,Stop) == true)
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{
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const char * const Space = (const char * const) memchr(Start, ' ', Stop - Start);
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pkgCache::VerIterator V;
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if (Space != NULL)
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{
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Stop = Space;
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const char * const Open = (const char * const) memchr(Space, '(', Stop - Space);
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if (likely(Open != NULL))
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{
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const char * const Close = (const char * const) memchr(Open, ')', Stop - Open);
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if (likely(Close != NULL))
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{
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std::string const version(Open + 1, (Close - Open) - 1);
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if (version != Ver.VerStr())
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{
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map_stringitem_t const idx = StoreString(pkgCacheGenerator::VERSIONNUMBER, version);
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Ver->SourceVerStr = idx;
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}
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}
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}
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}
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std::string const pkgname(Start, Stop - Start);
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if (pkgname != G.Name())
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{
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for (pkgCache::PkgIterator P = G.PackageList(); P.end() == false; P = G.NextPkg(P))
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{
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for (V = P.VersionList(); V.end() == false; ++V)
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{
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if (pkgname == V.SourcePkgName())
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{
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Ver->SourcePkgName = V->SourcePkgName;
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break;
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}
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}
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if (V.end() == false)
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break;
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}
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if (V.end() == true)
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{
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map_stringitem_t const idx = StoreString(pkgCacheGenerator::PKGNAME, pkgname);
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Ver->SourcePkgName = idx;
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}
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}
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}
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Ver->MultiArch = ParseMultiArch(true);
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// Archive Size
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Ver->Size = Section.FindULL("Size");
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// Unpacked Size (in K)
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Ver->InstalledSize = Section.FindULL("Installed-Size");
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Ver->InstalledSize *= 1024;
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// Priority
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if (Section.Find("Priority",Start,Stop) == true)
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{
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if (GrabWord(StringView(Start,Stop-Start),PrioList,Ver->Priority) == false)
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Ver->Priority = pkgCache::State::Extra;
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}
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if (ParseDepends(Ver,"Pre-Depends",pkgCache::Dep::PreDepends) == false)
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return false;
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if (ParseDepends(Ver,"Depends",pkgCache::Dep::Depends) == false)
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return false;
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if (ParseDepends(Ver,"Conflicts",pkgCache::Dep::Conflicts) == false)
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return false;
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if (ParseDepends(Ver,"Breaks",pkgCache::Dep::DpkgBreaks) == false)
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return false;
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if (ParseDepends(Ver,"Recommends",pkgCache::Dep::Recommends) == false)
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return false;
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if (ParseDepends(Ver,"Suggests",pkgCache::Dep::Suggests) == false)
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return false;
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if (ParseDepends(Ver,"Replaces",pkgCache::Dep::Replaces) == false)
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return false;
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if (ParseDepends(Ver,"Enhances",pkgCache::Dep::Enhances) == false)
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return false;
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// Obsolete.
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if (ParseDepends(Ver,"Optional",pkgCache::Dep::Suggests) == false)
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return false;
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if (ParseProvides(Ver) == false)
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return false;
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return true;
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}
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/*}}}*/
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// ListParser::Description - Return the description string /*{{{*/
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// ---------------------------------------------------------------------
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/* This is to return the string describing the package in debian
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form. If this returns the blank string then the entry is assumed to
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only describe package properties */
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string debListParser::Description(std::string const &lang)
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{
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return Description(StringView(lang)).to_string();
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}
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StringView debListParser::Description(StringView lang)
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{
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if (lang.empty())
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return Section.Find("Description");
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else
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return Section.Find(string("Description-").append(lang.data(), lang.size()));
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}
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/*}}}*/
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// ListParser::AvailableDescriptionLanguages /*{{{*/
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std::vector<std::string> debListParser::AvailableDescriptionLanguages()
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{
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std::vector<std::string> const understood = APT::Configuration::getLanguages();
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std::vector<std::string> avail;
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static constexpr int prefixLen = 12;
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static constexpr int avgLanguageLen = 5;
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std::string tagname;
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tagname.reserve(prefixLen + avgLanguageLen);
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tagname.assign("Description-");
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if (Section.Exists("Description") == true)
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avail.push_back("");
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for (std::vector<std::string>::const_iterator lang = understood.begin(); lang != understood.end(); ++lang)
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{
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tagname.resize(prefixLen);
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tagname.append(*lang);
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if (Section.Exists(tagname) == true)
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avail.push_back(*lang);
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}
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return avail;
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}
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/*}}}*/
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// ListParser::Description_md5 - Return the description_md5 MD5SumValue /*{{{*/
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// ---------------------------------------------------------------------
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/* This is to return the md5 string to allow the check if it is the right
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description. If no Description-md5 is found in the section it will be
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calculated.
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*/
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MD5SumValue debListParser::Description_md5()
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{
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auto const value = Section.Find("Description-md5");
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if (value.empty() == true)
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{
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StringView desc = Description(StringView("", 0));
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if (desc == "\n")
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return MD5SumValue();
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MD5Summation md5;
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md5.Add(desc.data(), desc.size());
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md5.Add("\n");
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return md5.Result();
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}
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else if (likely(value.size() == 32))
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{
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MD5SumValue sumvalue;
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if (sumvalue.Set(value))
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return sumvalue;
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_error->Error("Malformed Description-md5 line; includes invalid character '%.*s'", (int)value.length(), value.data());
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return MD5SumValue();
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}
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_error->Error("Malformed Description-md5 line; doesn't have the required length (32 != %d) '%.*s'", (int)value.size(), (int)value.length(), value.data());
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return MD5SumValue();
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}
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/*}}}*/
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// ListParser::UsePackage - Update a package structure /*{{{*/
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// ---------------------------------------------------------------------
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/* This is called to update the package with any new information
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that might be found in the section */
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bool debListParser::UsePackage(pkgCache::PkgIterator &Pkg,
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pkgCache::VerIterator &Ver)
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{
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string const static myArch = _config->Find("APT::Architecture");
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// Possible values are: "all", "native", "installed" and "none"
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// The "installed" mode is handled by ParseStatus(), See #544481 and friends.
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string const static essential = _config->Find("pkgCacheGen::Essential", "all");
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if (essential == "all" ||
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(essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()))
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if (Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
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return false;
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if (Section.FindFlag("Important",Pkg->Flags,pkgCache::Flag::Important) == false)
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return false;
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if (strcmp(Pkg.Name(),"apt") == 0)
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{
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if ((essential == "native" && Pkg->Arch != 0 && myArch == Pkg.Arch()) ||
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essential == "all")
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Pkg->Flags |= pkgCache::Flag::Essential | pkgCache::Flag::Important;
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else
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Pkg->Flags |= pkgCache::Flag::Important;
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}
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if (ParseStatus(Pkg,Ver) == false)
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return false;
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return true;
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}
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/*}}}*/
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// ListParser::VersionHash - Compute a unique hash for this version /*{{{*/
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// ---------------------------------------------------------------------
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/* */
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unsigned short debListParser::VersionHash()
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{
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static const StringView Sections[] ={"Installed-Size",
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"Depends",
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"Pre-Depends",
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// "Suggests",
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// "Recommends",
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"Conflicts",
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"Breaks",
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"Replaces"};
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unsigned long Result = INIT_FCS;
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char S[1024];
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for (StringView I : Sections)
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{
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const char *Start;
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const char *End;
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if (Section.Find(I,Start,End) == false || End - Start >= (signed)sizeof(S))
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continue;
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/* Strip out any spaces from the text, this undoes dpkgs reformatting
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of certain fields. dpkg also has the rather interesting notion of
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reformatting depends operators < -> <= */
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char *J = S;
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for (; Start != End; ++Start)
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{
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if (isspace_ascii(*Start) != 0)
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continue;
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*J++ = tolower_ascii(*Start);
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if ((*Start == '<' || *Start == '>') && Start[1] != *Start && Start[1] != '=')
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*J++ = '=';
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}
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Result = AddCRC16(Result,S,J - S);
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}
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return Result;
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}
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/*}}}*/
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// StatusListParser::ParseStatus - Parse the status field /*{{{*/
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// ---------------------------------------------------------------------
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/* Status lines are of the form,
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Status: want flag status
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want = unknown, install, hold, deinstall, purge
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flag = ok, reinstreq
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status = not-installed, config-files, half-installed, unpacked,
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half-configured, triggers-awaited, triggers-pending, installed
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*/
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bool debListParser::ParseStatus(pkgCache::PkgIterator &,
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pkgCache::VerIterator &)
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{
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return true;
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}
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bool debStatusListParser::ParseStatus(pkgCache::PkgIterator &Pkg,
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pkgCache::VerIterator &Ver)
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{
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const char *Start;
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const char *Stop;
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if (Section.Find("Status",Start,Stop) == false)
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return true;
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// UsePackage() is responsible for setting the flag in the default case
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bool const static essential = _config->Find("pkgCacheGen::Essential", "") == "installed";
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if (essential == true &&
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Section.FindFlag("Essential",Pkg->Flags,pkgCache::Flag::Essential) == false)
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return false;
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|
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// Isolate the first word
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const char *I = Start;
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for(; I < Stop && *I != ' '; I++);
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if (I >= Stop || *I != ' ')
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return _error->Error("Malformed Status line");
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|
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// Process the want field
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WordList WantList[] = {{"unknown",pkgCache::State::Unknown},
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{"install",pkgCache::State::Install},
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{"hold",pkgCache::State::Hold},
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{"deinstall",pkgCache::State::DeInstall},
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{"purge",pkgCache::State::Purge},
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{NULL, 0}};
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if (GrabWord(StringView(Start,I-Start),WantList,Pkg->SelectedState) == false)
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return _error->Error("Malformed 1st word in the Status line");
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// Isloate the next word
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I++;
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Start = I;
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for(; I < Stop && *I != ' '; I++);
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if (I >= Stop || *I != ' ')
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return _error->Error("Malformed status line, no 2nd word");
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|
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// Process the flag field
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WordList FlagList[] = {{"ok",pkgCache::State::Ok},
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{"reinstreq",pkgCache::State::ReInstReq},
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{"hold",pkgCache::State::HoldInst},
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{"hold-reinstreq",pkgCache::State::HoldReInstReq},
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{NULL, 0}};
|
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if (GrabWord(StringView(Start,I-Start),FlagList,Pkg->InstState) == false)
|
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return _error->Error("Malformed 2nd word in the Status line");
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|
|
// Isloate the last word
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I++;
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Start = I;
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for(; I < Stop && *I != ' '; I++);
|
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if (I != Stop)
|
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return _error->Error("Malformed Status line, no 3rd word");
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|
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// Process the flag field
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WordList StatusList[] = {{"not-installed",pkgCache::State::NotInstalled},
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{"config-files",pkgCache::State::ConfigFiles},
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{"half-installed",pkgCache::State::HalfInstalled},
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{"unpacked",pkgCache::State::UnPacked},
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{"half-configured",pkgCache::State::HalfConfigured},
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{"triggers-awaited",pkgCache::State::TriggersAwaited},
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{"triggers-pending",pkgCache::State::TriggersPending},
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{"installed",pkgCache::State::Installed},
|
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{NULL, 0}};
|
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if (GrabWord(StringView(Start,I-Start),StatusList,Pkg->CurrentState) == false)
|
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return _error->Error("Malformed 3rd word in the Status line");
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|
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/* A Status line marks the package as indicating the current
|
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version as well. Only if it is actually installed.. Otherwise
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the interesting dpkg handling of the status file creates bogus
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entries. */
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if (!(Pkg->CurrentState == pkgCache::State::NotInstalled ||
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Pkg->CurrentState == pkgCache::State::ConfigFiles))
|
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{
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if (Ver.end() == true)
|
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_error->Warning("Encountered status field in a non-version description");
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else
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Pkg->CurrentVer = Ver.Index();
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}
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return true;
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}
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|
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const char *debListParser::ConvertRelation(const char *I,unsigned int &Op)
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{
|
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// Determine the operator
|
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switch (*I)
|
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{
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case '<':
|
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I++;
|
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if (*I == '=')
|
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{
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I++;
|
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Op = pkgCache::Dep::LessEq;
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break;
|
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}
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|
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if (*I == '<')
|
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{
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I++;
|
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Op = pkgCache::Dep::Less;
|
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break;
|
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}
|
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|
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// < is the same as <= and << is really Cs < for some reason
|
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Op = pkgCache::Dep::LessEq;
|
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break;
|
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|
|
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)
|
|
{
|
|
StringView PackageView;
|
|
StringView VerView;
|
|
|
|
auto res = ParseDepends(Start, Stop, PackageView, VerView, Op, (bool)ParseArchFlags,
|
|
(bool) StripMultiArch, (bool) ParseRestrictionsList);
|
|
Package = PackageView.to_string();
|
|
Ver = VerView.to_string();
|
|
|
|
return res;
|
|
}
|
|
const char *debListParser::ParseDepends(const char *Start,const char *Stop,
|
|
StringView &Package,StringView &Ver,
|
|
unsigned int &Op, bool ParseArchFlags,
|
|
bool StripMultiArch,
|
|
bool ParseRestrictionsList)
|
|
{
|
|
// Strip off leading space
|
|
for (;Start != Stop && isspace_ascii(*Start) != 0; ++Start);
|
|
|
|
// Parse off the package name
|
|
const char *I = Start;
|
|
for (;I != Stop && isspace_ascii(*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 = StringView(Start, I - Start);
|
|
|
|
// We don't want to confuse library users which can't handle MultiArch
|
|
if (StripMultiArch == true) {
|
|
string const arch = _config->Find("APT::Architecture");
|
|
size_t const found = Package.rfind(':');
|
|
if (found != StringView::npos &&
|
|
(Package.substr(found) == ":any" ||
|
|
Package.substr(found) == ":native" ||
|
|
Package.substr(found +1) == arch))
|
|
Package = Package.substr(0,found);
|
|
}
|
|
|
|
// Skip white space to the '('
|
|
for (;I != Stop && isspace_ascii(*I) != 0 ; I++);
|
|
|
|
// Parse a version
|
|
if (I != Stop && *I == '(')
|
|
{
|
|
// Skip the '('
|
|
for (I++; I != Stop && isspace_ascii(*I) != 0 ; I++);
|
|
if (I + 3 >= Stop)
|
|
return 0;
|
|
I = ConvertRelation(I,Op);
|
|
|
|
// Skip whitespace
|
|
for (;I != Stop && isspace_ascii(*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_ascii(End[-1]); End--);
|
|
|
|
Ver = StringView(Start,End-Start);
|
|
I++;
|
|
}
|
|
else
|
|
{
|
|
Ver = StringView();
|
|
Op = pkgCache::Dep::NoOp;
|
|
}
|
|
|
|
// Skip whitespace
|
|
for (;I != Stop && isspace_ascii(*I) != 0; I++);
|
|
|
|
if (unlikely(ParseArchFlags == true))
|
|
{
|
|
string const arch = _config->Find("APT::Architecture");
|
|
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_ascii(*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_ascii(*I) != 0; I++);
|
|
}
|
|
|
|
if (NegArch == true)
|
|
Found = !Found;
|
|
|
|
if (Found == false)
|
|
Package = ""; /* not for this arch */
|
|
}
|
|
|
|
// Skip whitespace
|
|
for (;I != Stop && isspace_ascii(*I) != 0; I++);
|
|
}
|
|
|
|
if (unlikely(ParseRestrictionsList == true))
|
|
{
|
|
// Parse a restrictions formula which is in disjunctive normal form:
|
|
// (foo AND bar) OR (blub AND bla)
|
|
|
|
std::vector<string> const profiles = APT::Configuration::getBuildProfiles();
|
|
|
|
// if the next character is a restriction list, then by default the
|
|
// dependency does not apply and the conditions have to be checked
|
|
// if the next character is not a restriction list, then by default the
|
|
// dependency applies
|
|
bool applies1 = (*I != '<');
|
|
while (I != Stop)
|
|
{
|
|
if (*I != '<')
|
|
break;
|
|
|
|
++I;
|
|
// malformed
|
|
if (unlikely(I == Stop))
|
|
return 0;
|
|
|
|
const char *End = I;
|
|
|
|
// if of the prior restriction list is already fulfilled, then
|
|
// we can just skip to the end of the current list
|
|
if (applies1) {
|
|
for (;End != Stop && *End != '>'; ++End);
|
|
I = ++End;
|
|
// skip whitespace
|
|
for (;I != Stop && isspace_ascii(*I) != 0; I++);
|
|
} else {
|
|
bool applies2 = true;
|
|
// all the conditions inside a restriction list have to be
|
|
// met so once we find one that is not met, we can skip to
|
|
// the end of this list
|
|
while (I != Stop)
|
|
{
|
|
// look for whitespace or ending '>'
|
|
// End now points to the character after the current term
|
|
for (;End != Stop && !isspace_ascii(*End) && *End != '>'; ++End);
|
|
|
|
if (unlikely(End == Stop))
|
|
return 0;
|
|
|
|
bool NegRestriction = false;
|
|
if (*I == '!')
|
|
{
|
|
NegRestriction = true;
|
|
++I;
|
|
}
|
|
|
|
std::string restriction(I, End);
|
|
|
|
if (restriction.empty() == false && profiles.empty() == false &&
|
|
std::find(profiles.begin(), profiles.end(), restriction) != profiles.end())
|
|
{
|
|
if (NegRestriction) {
|
|
applies2 = false;
|
|
// since one of the terms does not apply we don't have to check the others
|
|
for (; End != Stop && *End != '>'; ++End);
|
|
}
|
|
} else {
|
|
if (!NegRestriction) {
|
|
applies2 = false;
|
|
// since one of the terms does not apply we don't have to check the others
|
|
for (; End != Stop && *End != '>'; ++End);
|
|
}
|
|
}
|
|
|
|
if (*End++ == '>') {
|
|
I = End;
|
|
// skip whitespace
|
|
for (;I != Stop && isspace_ascii(*I) != 0; I++);
|
|
break;
|
|
}
|
|
|
|
I = End;
|
|
// skip whitespace
|
|
for (;I != Stop && isspace_ascii(*I) != 0; I++);
|
|
}
|
|
if (applies2) {
|
|
applies1 = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (applies1 == false) {
|
|
Package = ""; //not for this restriction
|
|
}
|
|
}
|
|
|
|
if (I != Stop && *I == '|')
|
|
Op |= pkgCache::Dep::Or;
|
|
|
|
if (I == Stop || *I == ',' || *I == '|')
|
|
{
|
|
if (I != Stop)
|
|
for (I++; I != Stop && isspace_ascii(*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,
|
|
StringView 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)
|
|
{
|
|
StringView Package;
|
|
StringView Version;
|
|
unsigned int Op;
|
|
|
|
Start = ParseDepends(Start, Stop, Package, Version, Op, false, false, false);
|
|
if (Start == 0)
|
|
return _error->Error("Problem parsing dependency %.*s",(int)Tag.length(), Tag.data());
|
|
size_t const found = Package.rfind(':');
|
|
|
|
if (found == string::npos)
|
|
{
|
|
if (NewDepends(Ver,Package,pkgArch,Version,Op,Type) == false)
|
|
return false;
|
|
}
|
|
else if (Package.substr(found) == ":any")
|
|
{
|
|
if (NewDepends(Ver,Package,"any",Version,Op,Type) == false)
|
|
return false;
|
|
}
|
|
else
|
|
{
|
|
// Such dependencies are not supposed to be accepted …
|
|
// … but this is probably the best thing to do anyway
|
|
std::string Pkg;
|
|
if (Package.substr(found + 1) == "native")
|
|
Pkg = Package.substr(0, found).to_string() + ':' + Ver.Cache()->NativeArch();
|
|
else
|
|
Pkg = Package.to_string();
|
|
if (NewDepends(Ver, Pkg, "any", Version, Op | pkgCache::Dep::ArchSpecific, Type) == false)
|
|
return false;
|
|
}
|
|
|
|
if (Start == Stop)
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
/*}}}*/
|
|
// ListParser::ParseProvides - Parse the provides list /*{{{*/
|
|
// ---------------------------------------------------------------------
|
|
/* */
|
|
bool debListParser::ParseProvides(pkgCache::VerIterator &Ver)
|
|
{
|
|
/* it is unlikely, but while parsing dependencies, we might have already
|
|
picked up multi-arch implicit provides which we do not want to duplicate here */
|
|
bool hasProvidesAlready = false;
|
|
std::string const spzName = Ver.ParentPkg().FullName(false);
|
|
{
|
|
for (pkgCache::PrvIterator Prv = Ver.ProvidesList(); Prv.end() == false; ++Prv)
|
|
{
|
|
if (Prv.IsMultiArchImplicit() == false || (Prv->Flags & pkgCache::Flag::ArchSpecific) == 0)
|
|
continue;
|
|
if (spzName != Prv.OwnerPkg().FullName(false))
|
|
continue;
|
|
hasProvidesAlready = true;
|
|
break;
|
|
}
|
|
}
|
|
|
|
string const Arch = Ver.Arch();
|
|
const char *Start;
|
|
const char *Stop;
|
|
if (Section.Find("Provides",Start,Stop) == true)
|
|
{
|
|
StringView Package;
|
|
StringView Version;
|
|
unsigned int Op;
|
|
|
|
do
|
|
{
|
|
Start = ParseDepends(Start,Stop,Package,Version,Op, false, false, false);
|
|
const size_t archfound = Package.rfind(':');
|
|
if (Start == 0)
|
|
return _error->Error("Problem parsing Provides line");
|
|
if (unlikely(Op != pkgCache::Dep::NoOp && Op != pkgCache::Dep::Equals)) {
|
|
_error->Warning("Ignoring Provides line with non-equal DepCompareOp for package %s", Package.to_string().c_str());
|
|
} else if (archfound != string::npos) {
|
|
StringView spzArch = Package.substr(archfound + 1);
|
|
if (spzArch != "any")
|
|
{
|
|
if (NewProvides(Ver, Package.substr(0, archfound), spzArch, Version, pkgCache::Flag::MultiArchImplicit | pkgCache::Flag::ArchSpecific) == false)
|
|
return false;
|
|
}
|
|
if (NewProvides(Ver, Package, "any", Version, pkgCache::Flag::ArchSpecific) == false)
|
|
return false;
|
|
} else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign) {
|
|
if (APT::Configuration::checkArchitecture(Arch))
|
|
{
|
|
if (NewProvidesAllArch(Ver, Package, Version, 0) == false)
|
|
return false;
|
|
}
|
|
else if (NewProvides(Ver, Package, Arch, Version, 0) == false)
|
|
return false;
|
|
} else {
|
|
if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
|
|
{
|
|
if (NewProvides(Ver, Package.to_string().append(":any"), "any", Version, pkgCache::Flag::MultiArchImplicit) == false)
|
|
return false;
|
|
}
|
|
if (NewProvides(Ver, Package, Arch, Version, 0) == false)
|
|
return false;
|
|
}
|
|
if (archfound == std::string::npos)
|
|
{
|
|
string spzName = Package.to_string();
|
|
spzName.push_back(':');
|
|
spzName.append(Ver.ParentPkg().Arch());
|
|
pkgCache::PkgIterator const spzPkg = Ver.Cache()->FindPkg(spzName, "any");
|
|
if (spzPkg.end() == false)
|
|
{
|
|
if (NewProvides(Ver, spzName, "any", Version, pkgCache::Flag::MultiArchImplicit | pkgCache::Flag::ArchSpecific) == false)
|
|
return false;
|
|
}
|
|
}
|
|
} while (Start != Stop);
|
|
}
|
|
|
|
if (APT::Configuration::checkArchitecture(Arch))
|
|
{
|
|
if ((Ver->MultiArch & pkgCache::Version::Allowed) == pkgCache::Version::Allowed)
|
|
{
|
|
string const Package = string(Ver.ParentPkg().Name()).append(":").append("any");
|
|
if (NewProvides(Ver, Package, "any", Ver.VerStr(), pkgCache::Flag::MultiArchImplicit) == false)
|
|
return false;
|
|
}
|
|
else if ((Ver->MultiArch & pkgCache::Version::Foreign) == pkgCache::Version::Foreign)
|
|
{
|
|
if (NewProvidesAllArch(Ver, Ver.ParentPkg().Name(), Ver.VerStr(), pkgCache::Flag::MultiArchImplicit) == false)
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (hasProvidesAlready == false)
|
|
{
|
|
pkgCache::PkgIterator const spzPkg = Ver.Cache()->FindPkg(spzName, "any");
|
|
if (spzPkg.end() == false)
|
|
{
|
|
if (NewProvides(Ver, spzName, "any", Ver.VerStr(), pkgCache::Flag::MultiArchImplicit | pkgCache::Flag::ArchSpecific) == 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(StringView Word,const WordList *List,unsigned char &Out)
|
|
{
|
|
for (unsigned int C = 0; List[C].Str != 0; C++)
|
|
{
|
|
if (Word.length() == strlen(List[C].Str) &&
|
|
strncasecmp(Word.data(),List[C].Str,Word.length()) == 0)
|
|
{
|
|
Out = List[C].Val;
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
/*}}}*/
|
|
// ListParser::Step - Move to the next section in the file /*{{{*/
|
|
// ---------------------------------------------------------------------
|
|
/* This has to be careful to only process the correct architecture */
|
|
bool debListParser::Step()
|
|
{
|
|
iOffset = Tags.Offset();
|
|
return Tags.Step(Section);
|
|
}
|
|
/*}}}*/
|
|
// 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;
|
|
}
|
|
/*}}}*/
|
|
bool debListParser::SameVersion(unsigned short const Hash, /*{{{*/
|
|
pkgCache::VerIterator const &Ver)
|
|
{
|
|
if (pkgCacheListParser::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;
|
|
}
|
|
/*}}}*/
|
|
|
|
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(NewProvides(Ver, DebFile, Pkg.Cache()->NativeArch(), Ver.VerStr(), 0) == false)
|
|
return false;
|
|
return res;
|
|
}
|
|
|
|
debListParser::~debListParser() {}
|
|
|