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apt/apt-pkg/sourcelist.cc
Daniel Baumann 6810ba718b
Adding upstream version 3.0.2. 
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-20 21:10:43 +02:00

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// -*- mode: cpp; mode: fold -*-
// Description /*{{{*/
/* ######################################################################
List of Sources
##################################################################### */
/*}}}*/
// Include Files /*{{{*/
#include <config.h>
#include <apt-pkg/cmndline.h>
#include <apt-pkg/configuration.h>
#include <apt-pkg/debindexfile.h>
#include <apt-pkg/debsrcrecords.h>
#include <apt-pkg/error.h>
#include <apt-pkg/fileutl.h>
#include <apt-pkg/indexfile.h>
#include <apt-pkg/metaindex.h>
#include <apt-pkg/pkgcache.h>
#include <apt-pkg/sourcelist.h>
#include <apt-pkg/strutl.h>
#include <apt-pkg/tagfile.h>
#include <algorithm>
#include <cctype>
#include <cstddef>
#include <cstring>
#include <ctime>
#include <fstream>
#include <map>
#include <string>
#include <vector>
#include <apti18n.h>
/*}}}*/
using namespace std;
using namespace std::literals;
// Global list of Items supported
static pkgSourceList::Type *ItmList[10];
pkgSourceList::Type **pkgSourceList::Type::GlobalList = ItmList;
unsigned long pkgSourceList::Type::GlobalListLen = 0;
static std::vector<std::string> FindMultiValue(pkgTagSection &Tags, char const *const Field) /*{{{*/
{
auto values = Tags.FindS(Field);
// we ignore duplicate spaces by removing empty values
std::replace_if(values.begin(), values.end(), isspace_ascii, ' ');
auto vect = VectorizeString(values, ' ');
vect.erase(std::remove_if(vect.begin(), vect.end(), [](std::string const &s) { return s.empty(); }), vect.end());
return vect;
}
/*}}}*/
// Type::Type - Constructor /*{{{*/
// ---------------------------------------------------------------------
/* Link this to the global list of items*/
pkgSourceList::Type::Type(char const * const pName, char const * const pLabel) : Name(pName), Label(pLabel)
{
ItmList[GlobalListLen] = this;
++GlobalListLen;
}
pkgSourceList::Type::~Type() {}
/*}}}*/
// Type::GetType - Get a specific meta for a given type /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgSourceList::Type *pkgSourceList::Type::GetType(const char *Type)
{
for (unsigned I = 0; I != GlobalListLen; ++I)
if (strcmp(GlobalList[I]->Name,Type) == 0)
return GlobalList[I];
return 0;
}
/*}}}*/
// Type::FixupURI - Normalize the URI and check it.. /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgSourceList::Type::FixupURI(string &URI) const
{
if (URI.empty() == true)
return false;
if (URI.find(':') == string::npos)
return false;
URI = ::URI{SubstVar(URI, "$(ARCH)", _config->Find("APT::Architecture"))};
// Make sure that the URI is / postfixed
if (URI.back() != '/')
URI.push_back('/');
return true;
}
/*}}}*/
bool pkgSourceList::Type::ParseStanza(vector<metaIndex *> &List, /*{{{*/
pkgTagSection &Tags,
unsigned int const i,
FileFd &Fd)
{
map<string, string> Options;
string Enabled = Tags.FindS("Enabled");
if (Enabled.empty() == false && StringToBool(Enabled) == false)
return true;
std::map<char const * const, std::pair<char const * const, bool> > mapping;
#define APT_PLUSMINUS(X, Y) \
mapping.insert(std::make_pair(X, std::make_pair(Y, true))); \
mapping.insert(std::make_pair(X "-Add", std::make_pair(Y "+", true))); \
mapping.insert(std::make_pair(X "-Remove", std::make_pair(Y "-", true)))
APT_PLUSMINUS("Architectures", "arch");
APT_PLUSMINUS("Languages", "lang");
APT_PLUSMINUS("Targets", "target");
#undef APT_PLUSMINUS
mapping.insert(std::make_pair("Trusted", std::make_pair("trusted", false)));
mapping.insert(std::make_pair("Check-Valid-Until", std::make_pair("check-valid-until", false)));
mapping.insert(std::make_pair("Valid-Until-Min", std::make_pair("valid-until-min", false)));
mapping.insert(std::make_pair("Valid-Until-Max", std::make_pair("valid-until-max", false)));
mapping.insert(std::make_pair("Check-Date", std::make_pair("check-date", false)));
mapping.insert(std::make_pair("Date-Max-Future", std::make_pair("date-max-future", false)));
mapping.insert(std::make_pair("Snapshot", std::make_pair("snapshot", false)));
mapping.insert(std::make_pair("Signed-By", std::make_pair("signed-by", false)));
mapping.insert(std::make_pair("PDiffs", std::make_pair("pdiffs", false)));
mapping.insert(std::make_pair("By-Hash", std::make_pair("by-hash", false)));
for (std::map<char const * const, std::pair<char const * const, bool> >::const_iterator m = mapping.begin(); m != mapping.end(); ++m)
if (Tags.Exists(m->first))
{
if (m->second.second)
{
auto const values = FindMultiValue(Tags, m->first);
Options[m->second.first] = APT::String::Join(values, ",");
}
else
Options[m->second.first] = Tags.FindS(m->first);
}
{
std::string entry;
strprintf(entry, "%s:%i", Fd.Name().c_str(), i);
Options["sourceslist-entry"] = entry;
}
Options["sourceslist-entry-is-deb822"] = "true";
// now create one item per suite/section
auto const list_uris = FindMultiValue(Tags, "URIs");
auto const list_comp = FindMultiValue(Tags, "Components");
auto list_suite = FindMultiValue(Tags, "Suites");
{
auto const nativeArch = _config->Find("APT::Architecture");
std::transform(list_suite.begin(), list_suite.end(), list_suite.begin(),
[&](std::string const &suite) { return SubstVar(suite, "$(ARCH)", nativeArch); });
}
if (list_uris.empty())
// TRANSLATOR: %u is a line number, the first %s is a filename of a file with the extension "second %s" and the third %s is a unique identifier for bugreports
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "URI");
if (list_suite.empty())
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "Suite");
for (auto URI : list_uris)
{
if (FixupURI(URI) == false)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "URI parse");
for (auto const &S : list_suite)
{
if (likely(S.empty() == false) && S[S.size() - 1] == '/')
{
if (list_comp.empty() == false)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "absolute Suite Component");
if (CreateItem(List, URI, S, "", Options) == false)
return false;
}
else
{
if (list_comp.empty())
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), i, "sources", Fd.Name().c_str(), "Component");
for (auto const &C : list_comp)
if (CreateItem(List, URI, S, C, Options) == false)
return false;
}
}
}
return true;
}
/*}}}*/
// Type::ParseLine - Parse a single line /*{{{*/
// ---------------------------------------------------------------------
/* This is a generic one that is the 'usual' format for sources.list
Weird types may override this. */
bool pkgSourceList::Type::ParseLine(vector<metaIndex *> &List,
const char *Buffer,
unsigned int const CurLine,
string const &File) const
{
for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
// Parse option field if it exists
// e.g.: [ option1=value1 option2=value2 ]
map<string, string> Options;
{
std::string entry;
strprintf(entry, "%s:%i", File.c_str(), CurLine);
Options["sourceslist-entry"] = entry;
}
if (Buffer != 0 && Buffer[0] == '[')
{
++Buffer; // ignore the [
for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
while (*Buffer != ']')
{
// get one option, e.g. option1=value1
string option;
if (ParseQuoteWord(Buffer,option) == false)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] unparsable");
if (option.length() < 3)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] too short");
// accept options even if the last has no space before the ]-end marker
if (option.at(option.length()-1) == ']')
{
for (; *Buffer != ']'; --Buffer);
option.resize(option.length()-1);
}
size_t const needle = option.find('=');
if (needle == string::npos)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] not assignment");
string const key = string(option, 0, needle);
string const value = string(option, needle + 1, option.length());
if (key.empty() == true)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] no key");
if (value.empty() == true)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "[option] no value");
Options[key] = value;
}
++Buffer; // ignore the ]
for (;Buffer != 0 && isspace(*Buffer); ++Buffer); // Skip whitespaces
}
string URI;
string Dist;
string Section;
if (ParseQuoteWord(Buffer,URI) == false)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "URI");
if (ParseQuoteWord(Buffer,Dist) == false)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "Suite");
if (FixupURI(URI) == false)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "URI parse");
// Check for an absolute dists specification.
if (Dist.empty() == false && Dist[Dist.size() - 1] == '/')
{
if (ParseQuoteWord(Buffer,Section) == true)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "absolute Suite Component");
Dist = SubstVar(Dist,"$(ARCH)",_config->Find("APT::Architecture"));
return CreateItem(List, URI, Dist, Section, Options);
}
// Grab the rest of the dists
if (ParseQuoteWord(Buffer,Section) == false)
return _error->Error(_("Malformed entry %u in %s file %s (%s)"), CurLine, "list", File.c_str(), "Component");
do
{
if (CreateItem(List, URI, Dist, Section, Options) == false)
return false;
}
while (ParseQuoteWord(Buffer,Section) == true);
return true;
}
/*}}}*/
// SourceList::pkgSourceList - Constructors /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgSourceList::pkgSourceList() : d(NULL)
{
}
/*}}}*/
// SourceList::~pkgSourceList - Destructor /*{{{*/
// ---------------------------------------------------------------------
/* */
pkgSourceList::~pkgSourceList()
{
for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
delete *I;
SrcList.clear();
for (auto F = VolatileFiles.begin(); F != VolatileFiles.end(); ++F)
delete (*F);
VolatileFiles.clear();
}
/*}}}*/
// SourceList::ReadMainList - Read the main source list from etc /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgSourceList::ReadMainList()
{
Reset();
// CNC:2003-11-28 - Entries in sources.list have priority over
// entries in sources.list.d.
string Main = _config->FindFile("Dir::Etc::sourcelist", "/dev/null");
string Parts = _config->FindDir("Dir::Etc::sourceparts", "/dev/null");
_error->PushToStack();
if (RealFileExists(Main) == true)
ReadAppend(Main);
else if (DirectoryExists(Parts) == false && APT::String::Endswith(Parts, "/dev/null") == false)
// Only warn if there are no sources.list.d.
_error->WarningE("DirectoryExists", _("Unable to read %s"), Parts.c_str());
if (DirectoryExists(Parts) == true)
ReadSourceDir(Parts);
else if (Main.empty() == false && RealFileExists(Main) == false &&
APT::String::Endswith(Parts, "/dev/null") == false)
// Only warn if there is no sources.list file.
_error->WarningE("RealFileExists", _("Unable to read %s"), Main.c_str());
for (auto && file: _config->FindVector("APT::Sources::With"))
AddVolatileFile(file, nullptr);
auto good = _error->PendingError() == false;
_error->MergeWithStack();
return good;
}
/*}}}*/
// SourceList::Reset - Clear the sourcelist contents /*{{{*/
// ---------------------------------------------------------------------
/* */
void pkgSourceList::Reset()
{
for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
delete *I;
SrcList.clear();
}
/*}}}*/
// SourceList::Read - Parse the sourcelist file /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgSourceList::Read(string const &File)
{
Reset();
return ReadAppend(File);
}
/*}}}*/
// SourceList::ReadAppend - Parse a sourcelist file /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgSourceList::ReadAppend(string const &File)
{
if (flExtension(File) == "sources")
return ParseFileDeb822(File);
else
return ParseFileOldStyle(File);
}
/*}}}*/
// SourceList::ReadFileOldStyle - Read Traditional style sources.list /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgSourceList::ParseFileOldStyle(std::string const &File)
{
FileFd Fd;
if (OpenConfigurationFileFd(File, Fd) == false)
return false;
std::string Buffer;
for (unsigned int CurLine = 1; Fd.ReadLine(Buffer); ++CurLine)
{
// remove comments
size_t curpos = 0;
while ((curpos = Buffer.find('#', curpos)) != std::string::npos)
{
size_t const openbrackets = std::count(Buffer.begin(), Buffer.begin() + curpos, '[');
size_t const closedbrackets = std::count(Buffer.begin(), Buffer.begin() + curpos, ']');
if (openbrackets > closedbrackets)
{
// a # in an option, unlikely, but oh well, it was supported so stick to it
++curpos;
continue;
}
Buffer.erase(curpos);
break;
}
// remove spaces before/after
curpos = Buffer.find_first_not_of(" \t\r");
if (curpos != 0)
Buffer.erase(0, curpos);
curpos = Buffer.find_last_not_of(" \t\r");
if (curpos != std::string::npos)
Buffer.erase(curpos + 1);
if (Buffer.empty())
continue;
// Grok it
std::string const LineType = Buffer.substr(0, Buffer.find_first_of(" \t\v"));
if (LineType.empty() || LineType == Buffer)
return _error->Error(_("Malformed line %u in source list %s (type)"),CurLine,File.c_str());
Type *Parse = Type::GetType(LineType.c_str());
if (Parse == 0)
return _error->Error(_("Type '%s' is not known on line %u in source list %s"),LineType.c_str(),CurLine,File.c_str());
if (Parse->ParseLine(SrcList, Buffer.c_str() + LineType.length(), CurLine, File) == false)
return false;
}
return true;
}
/*}}}*/
// SourceList::ParseFileDeb822 - Parse deb822 style sources.list /*{{{*/
// ---------------------------------------------------------------------
/* Returns: the number of stanzas parsed*/
bool pkgSourceList::ParseFileDeb822(string const &File)
{
// see if we can read the file
FileFd Fd;
if (OpenConfigurationFileFd(File, Fd) == false)
return false;
pkgTagFile Sources(&Fd, pkgTagFile::SUPPORT_COMMENTS);
if (Fd.IsOpen() == false || Fd.Failed())
return _error->Error(_("Malformed stanza %u in source list %s (type)"),0,File.c_str());
// read step by step
pkgTagSection Tags;
unsigned int i = 0;
while (Sources.Step(Tags) == true)
{
++i;
if(Tags.Exists("Types") == false)
return _error->Error(_("Malformed stanza %u in source list %s (type)"),i,File.c_str());
for (auto const &type : FindMultiValue(Tags, "Types"))
{
Type *Parse = Type::GetType(type.c_str());
if (Parse == 0)
{
_error->Error(_("Type '%s' is not known on stanza %u in source list %s"), type.c_str(), i, Fd.Name().c_str());
return false;
}
if (!Parse->ParseStanza(SrcList, Tags, i, Fd))
return false;
}
}
return true;
}
/*}}}*/
// SourceList::FindIndex - Get the index associated with a file /*{{{*/
static bool FindInIndexFileContainer(std::vector<pkgIndexFile *> const &Cont, pkgCache::PkgFileIterator const &File, pkgIndexFile *&Found)
{
auto const J = std::find_if(Cont.begin(), Cont.end(), [&File](pkgIndexFile const * const J) {
return J->FindInCache(*File.Cache()) == File;
});
if (J != Cont.end())
{
Found = (*J);
return true;
}
return false;
}
bool pkgSourceList::FindIndex(pkgCache::PkgFileIterator File,
pkgIndexFile *&Found) const
{
for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
if (FindInIndexFileContainer(*(*I)->GetIndexFiles(), File, Found))
return true;
return FindInIndexFileContainer(VolatileFiles, File, Found);
}
/*}}}*/
// SourceList::GetIndexes - Load the index files into the downloader /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgSourceList::GetIndexes(pkgAcquire *Owner, bool GetAll) const
{
for (const_iterator I = SrcList.begin(); I != SrcList.end(); ++I)
if ((*I)->GetIndexes(Owner,GetAll) == false)
return false;
return true;
}
/*}}}*/
// CNC:2003-03-03 - By Anton V. Denisov <avd@altlinux.org>.
// SourceList::ReadSourceDir - Read a directory with sources files
// Based on ReadConfigDir() /*{{{*/
// ---------------------------------------------------------------------
/* */
bool pkgSourceList::ReadSourceDir(string const &Dir)
{
std::vector<std::string> const ext = {"list", "sources"};
// Read the files
bool good = true;
for (auto const &I : GetListOfFilesInDir(Dir, ext, true))
good = ReadAppend(I) && good;
return good;
}
/*}}}*/
// GetLastModified() /*{{{*/
// ---------------------------------------------------------------------
/* */
time_t pkgSourceList::GetLastModifiedTime()
{
vector<string> List;
string Main = _config->FindFile("Dir::Etc::sourcelist");
string Parts = _config->FindDir("Dir::Etc::sourceparts");
// go over the parts
if (DirectoryExists(Parts) == true)
List = GetListOfFilesInDir(Parts, "list", true);
// calculate the time
std::vector<time_t> modtimes;
modtimes.reserve(1 + List.size());
modtimes.push_back(GetModificationTime(Main));
std::transform(List.begin(), List.end(), std::back_inserter(modtimes), GetModificationTime);
auto const maxmtime = std::max_element(modtimes.begin(), modtimes.end());
return *maxmtime;
}
/*}}}*/
std::vector<pkgIndexFile*> pkgSourceList::GetVolatileFiles() const /*{{{*/
{
return VolatileFiles;
}
/*}}}*/
void pkgSourceList::AddVolatileFile(pkgIndexFile * const File) /*{{{*/
{
if (File != nullptr)
VolatileFiles.push_back(File);
}
/*}}}*/
static bool fileNameMatches(std::string_view const &filename, std::string const &idxtype)/*{{{*/
{
for (auto && type: APT::Configuration::getCompressionTypes())
{
if (type == "uncompressed")
{
if (filename == idxtype || APT::String::Endswith(filename, '_' + idxtype))
return true;
}
else if (filename == idxtype + '.' + type ||
APT::String::Endswith(filename, '_' + idxtype + '.' + type))
return true;
}
return false;
}
/*}}}*/
bool pkgSourceList::AddVolatileFile(std::string const &File, std::vector<std::string> * const VolatileCmdL)/*{{{*/
{
// Note: FileExists matches directories and links, too!
if (File.empty() || FileExists(File) == false)
return false;
auto const ext = flExtension(File);
// udeb is not included as installing it is usually a mistake rather than intended
if (ext == "deb" || ext == "ddeb")
AddVolatileFile(new debDebPkgFileIndex(File));
else if (ext == "dsc")
AddVolatileFile(new debDscFileIndex(File));
else if (FileExists(flCombine(File, "debian/control")))
AddVolatileFile(new debDscFileIndex(flCombine(File, "debian/control")));
else if (ext == "changes")
{
debDscRecordParser changes(File, nullptr);
std::vector<pkgSrcRecords::File> fileslst;
if (changes.Files(fileslst) == false || fileslst.empty())
return false;
auto const basedir = flNotFile(File);
for (auto && file: fileslst)
{
auto const name = flCombine(basedir, file.Path);
AddVolatileFile(name, VolatileCmdL);
if (file.Hashes.VerifyFile(name) == false)
return _error->Error("The file %s does not match with the hashes in the %s file!", name.c_str(), File.c_str());
}
return true;
}
else
{
auto const filename = flNotDir(File);
auto const Target = IndexTarget(File, std::string{filename}, File, "file:" + File, false, true, {
{ "FILENAME", File },
{ "REPO_URI", ("file:"s += flAbsPath(flNotFile(File))) += '/' },
{ "COMPONENT", "volatile-packages-file" },
});
if (fileNameMatches(filename, "Packages"))
AddVolatileFile(new debPackagesIndex(Target, true));
else if (fileNameMatches(filename, "Sources"))
AddVolatileFile(new debSourcesIndex(Target, true));
else
return false;
}
if (VolatileCmdL != nullptr)
VolatileCmdL->push_back(File);
return true;
}
bool pkgSourceList::AddVolatileFile(std::string const &File)
{
return AddVolatileFile(File, nullptr);
}
/*}}}*/
void pkgSourceList::AddVolatileFiles(CommandLine &CmdL, std::vector<std::string> * const VolatileCmdL)/*{{{*/
{
(void)std::remove_if(CmdL.FileList + 1, CmdL.FileList + 1 + CmdL.FileSize(), [&](char const * const I) {
if (I != nullptr && (I[0] == '/' || (I[0] == '.' && (I[1] == '\0' || (I[1] == '.' && (I[2] == '\0' || I[2] == '/')) || I[1] == '/'))))
{
if (AddVolatileFile(I, VolatileCmdL))
;
else
_error->Error(_("Unsupported file %s given on commandline"), I);
return true;
}
return false;
});
}
/*}}}*/
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