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support <libc>-<kernel>-<cpu> in architecture specs

APT has a different understanding than dpkg (#748936) what matches and
what doesn't match an architecture specification as it isn't converting
back (and forward) to Debian triplets. That has to eventually be solved
some way or the other, but until that happens we change the matching in
apt so that porters can continue their work on non-gnu libc-ports even
if policy doesn't specify that yet (and dpkg just supporting it "by
accident" via triplets).

The initial patch was reformatted, fixed in terms of patterns containing
"any-any", dealing with expanding an arch without libc to gnu while a
pattern expands libc to any, the parsedepends test was fixed (the new
if's were inserted one step too early) and another test just for the
specifications added.

Closes: #812212
Thanks: Bálint Réczey for initial patch
tags/debian/1.2.2
David Kalnischkies 5 years ago
parent
commit
5025879e3f
4 changed files with 125 additions and 18 deletions
  1. +35
    -16
      apt-pkg/cachefilter.cc
  2. +2
    -2
      apt-pkg/cachefilter.h
  3. +66
    -0
      test/libapt/cachefilter_test.cc
  4. +22
    -0
      test/libapt/parsedepends_test.cc

+ 35
- 16
apt-pkg/cachefilter.cc View File

@@ -68,28 +68,47 @@ bool PackageNameMatchesFnmatch::operator() (pkgCache::GrpIterator const &Grp) {
return fnmatch(Pattern.c_str(), Grp.Name(), FNM_CASEFOLD) == 0;
}
/*}}}*/
// Architecture matches <kernel>-<cpu> specification /*{{{*/
// Architecture matches <libc>-<kernel>-<cpu> specification /*{{{*/
//----------------------------------------------------------------------
/* The complete architecture, consisting of <kernel>-<cpu>. */
static std::string CompleteArch(std::string const &arch) {
if (arch.find('-') != std::string::npos) {
// ensure that only -any- is replaced and not something like company-
std::string complete = std::string("-").append(arch).append("-");
complete = SubstVar(complete, "-any-", "-*-");
complete = complete.substr(1, complete.size()-2);
return complete;
}
else if (arch == "any") return "*-*";
else return "linux-" + arch;
}
PackageArchitectureMatchesSpecification::PackageArchitectureMatchesSpecification(std::string const &pattern, bool const isPattern) :
literal(pattern), complete(CompleteArch(pattern)), isPattern(isPattern) {
/* The complete architecture, consisting of <libc>-<kernel>-<cpu>. */
static std::string CompleteArch(std::string const &arch, bool const isPattern) {
auto const found = arch.find('-');
if (found != std::string::npos)
{
// ensure that only -any- is replaced and not something like company-
std::string complete = std::string("-").append(arch).append("-");
size_t pos = 0;
char const * const search = "-any-";
auto const search_len = strlen(search) - 2;
while((pos = complete.find(search, pos)) != std::string::npos) {
complete.replace(pos + 1, search_len, "*");
pos += 2;
}
complete = complete.substr(1, complete.size()-2);
if (arch.find('-', found+1) != std::string::npos)
// <libc>-<kernel>-<cpu> format
return complete;
// <kernel>-<cpu> format
else if (isPattern)
return "*-" + complete;
else
return "gnu-" + complete;
}
else if (arch == "any")
return "*-*-*";
else if (isPattern)
return "*-linux-" + arch;
else
return "gnu-linux-" + arch;
}
PackageArchitectureMatchesSpecification::PackageArchitectureMatchesSpecification(std::string const &pattern, bool const pisPattern) :
literal(pattern), complete(CompleteArch(pattern, pisPattern)), isPattern(pisPattern) {
}
bool PackageArchitectureMatchesSpecification::operator() (char const * const &arch) {
if (strcmp(literal.c_str(), arch) == 0 ||
strcmp(complete.c_str(), arch) == 0)
return true;
std::string const pkgarch = CompleteArch(arch);
std::string const pkgarch = CompleteArch(arch, !isPattern);
if (isPattern == true)
return fnmatch(complete.c_str(), pkgarch.c_str(), 0) == 0;
return fnmatch(pkgarch.c_str(), complete.c_str(), 0) == 0;


+ 2
- 2
apt-pkg/cachefilter.h View File

@@ -115,11 +115,11 @@ class PackageArchitectureMatchesSpecification : public PackageMatcher { /*{{{*/
/** \class PackageArchitectureMatchesSpecification
\brief matching against architecture specification strings

The strings are of the format <kernel>-<cpu> where either component,
The strings are of the format <libc>-<kernel>-<cpu> where either component,
or the whole string, can be the wildcard "any" as defined in
debian-policy §11.1 "Architecture specification strings".

Examples: i386, mipsel, linux-any, any-amd64, any */
Examples: i386, mipsel, musl-linux-amd64, linux-any, any-amd64, any */
std::string literal;
std::string complete;
bool isPattern;


+ 66
- 0
test/libapt/cachefilter_test.cc View File

@@ -0,0 +1,66 @@
#include <config.h>

#include <apt-pkg/cachefilter.h>

#include <string>

#include <gtest/gtest.h>

TEST(CacheFilterTest, ArchitectureSpecification)
{
{
SCOPED_TRACE("Pattern is any-armhf");
APT::CacheFilter::PackageArchitectureMatchesSpecification ams("any-armhf");
EXPECT_TRUE(ams("armhf"));
EXPECT_FALSE(ams("armel"));
EXPECT_TRUE(ams("linux-armhf"));
EXPECT_FALSE(ams("linux-armel"));
EXPECT_TRUE(ams("kfreebsd-armhf"));
EXPECT_TRUE(ams("gnu-linux-armhf"));
EXPECT_FALSE(ams("gnu-linux-armel"));
EXPECT_TRUE(ams("gnu-kfreebsd-armhf"));
EXPECT_TRUE(ams("musl-linux-armhf"));
}
{
SCOPED_TRACE("Pattern is linux-any");
APT::CacheFilter::PackageArchitectureMatchesSpecification ams("linux-any");
EXPECT_TRUE(ams("armhf"));
EXPECT_TRUE(ams("armel"));
EXPECT_TRUE(ams("linux-armhf"));
EXPECT_TRUE(ams("linux-armel"));
EXPECT_FALSE(ams("kfreebsd-armhf"));
EXPECT_TRUE(ams("gnu-linux-armhf"));
EXPECT_TRUE(ams("gnu-linux-armel"));
EXPECT_FALSE(ams("gnu-kfreebsd-armhf"));
EXPECT_TRUE(ams("musl-linux-armhf"));
}
{
SCOPED_TRACE("Pattern is gnu-any-any");
APT::CacheFilter::PackageArchitectureMatchesSpecification ams("gnu-any-any"); //really?
EXPECT_TRUE(ams("armhf"));
EXPECT_TRUE(ams("armel"));
EXPECT_TRUE(ams("linux-armhf"));
EXPECT_TRUE(ams("linux-armel"));
EXPECT_TRUE(ams("kfreebsd-armhf"));
EXPECT_TRUE(ams("gnu-linux-armhf"));
EXPECT_TRUE(ams("gnu-linux-armel"));
EXPECT_TRUE(ams("gnu-kfreebsd-armhf"));
EXPECT_FALSE(ams("musl-linux-armhf"));
}
{
SCOPED_TRACE("Architecture is armhf");
APT::CacheFilter::PackageArchitectureMatchesSpecification ams("armhf", false);
EXPECT_TRUE(ams("armhf"));
EXPECT_FALSE(ams("armel"));
EXPECT_TRUE(ams("linux-any"));
EXPECT_FALSE(ams("kfreebsd-any"));
EXPECT_TRUE(ams("any-armhf"));
EXPECT_FALSE(ams("any-armel"));
EXPECT_TRUE(ams("linux-armhf"));
EXPECT_FALSE(ams("kfreebsd-armhf"));
EXPECT_TRUE(ams("gnu-linux-armhf"));
EXPECT_FALSE(ams("gnu-linux-armel"));
EXPECT_FALSE(ams("gnu-kfreebsd-armhf"));
EXPECT_FALSE(ams("musl-linux-armhf"));
}
}

+ 22
- 0
test/libapt/parsedepends_test.cc View File

@@ -31,6 +31,8 @@ static void parseDependency(bool const StripMultiArch, bool const ParseArchFlag
"not-for-darwin [ !darwin-any ], "
"cpu-for-me [ any-amd64 ], "
"os-for-me [ linux-any ], "
"libc-for-me [ gnu-linux-any ], "
"libc-not-for-me [ musl-linux-any ], "
"cpu-not-for-me [ any-armel ], "
"os-not-for-me [ kfreebsd-any ], "
"not-in-stage1 <!stage1>, "
@@ -156,6 +158,26 @@ static void parseDependency(bool const StripMultiArch, bool const ParseArchFlag
Start++;
}

if (ParseArchFlags == true) {
Start = debListParser::ParseDepends(Start, End, Package, Version, Op, ParseArchFlags, StripMultiArch, ParseRestrictionsList);
EXPECT_EQ("libc-for-me", Package);
EXPECT_EQ("", Version);
EXPECT_EQ(Null | pkgCache::Dep::NoOp, Op);
} else {
EXPECT_EQ(true, 0 == debListParser::ParseDepends(Start, End, Package, Version, Op, ParseArchFlags, StripMultiArch, ParseRestrictionsList));
Start = strstr(Start, ",");
Start++;
}

if (ParseArchFlags == true) {
Start = debListParser::ParseDepends(Start, End, Package, Version, Op, ParseArchFlags, StripMultiArch, ParseRestrictionsList);
EXPECT_EQ("", Package); // libc-not-for-me
} else {
EXPECT_EQ(true, 0 == debListParser::ParseDepends(Start, End, Package, Version, Op, ParseArchFlags, StripMultiArch, ParseRestrictionsList));
Start = strstr(Start, ",");
Start++;
}

if (ParseArchFlags == true) {
Start = debListParser::ParseDepends(Start, End, Package, Version, Op, ParseArchFlags, StripMultiArch, ParseRestrictionsList);
EXPECT_EQ("", Package); // cpu-not-for-me


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