Adding upstream version 2.7.12.upstream/2.7.12

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 399 insertions, 0 deletions

diff --git a/test/libapt/fileutl_test.cc b/test/libapt/fileutl_test.cc
new file mode 100644
index 0000000..da772df
--- /dev/null
+++ b/test/libapt/fileutl_test.cc
@@ -0,0 +1,399 @@
+#include <config.h>
+
+#include <apt-pkg/aptconfiguration.h>
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+#include <apt-pkg/strutl.h>
+
+#include <algorithm>
+#include <cstdlib>
+#include <cstring>
+#include <string>
+#include <vector>
+
+#include <gtest/gtest.h>
+
+#include "file-helpers.h"
+
+static void TestFileFd(mode_t const a_umask, mode_t const ExpectedFilePermission,
+      unsigned int const filemode, APT::Configuration::Compressor const &compressor)
+{
+   std::string trace;
+   strprintf(trace, "TestFileFd: Compressor: %s umask: %#o permission: %#o mode: %d", compressor.Name.c_str(), a_umask, ExpectedFilePermission, filemode);
+   SCOPED_TRACE(trace);
+
+   auto const file = createTemporaryFile("filefd-test");
+   EXPECT_TRUE(RemoveFile("TestFileFd", file.Name()));
+
+   FileFd f;
+   umask(a_umask);
+   EXPECT_TRUE(f.Open(file.Name(), filemode, compressor));
+   EXPECT_TRUE(f.IsOpen());
+   EXPECT_FALSE(f.Failed());
+   EXPECT_EQ(umask(a_umask), a_umask);
+
+   std::string test = "This is a test!\n";
+   EXPECT_TRUE(f.Write(test.c_str(), test.size()));
+   EXPECT_TRUE(f.IsOpen());
+   EXPECT_FALSE(f.Failed());
+
+   f.Close();
+   EXPECT_FALSE(f.IsOpen());
+   EXPECT_FALSE(f.Failed());
+
+   EXPECT_TRUE(f.Open(file.Name(), FileFd::ReadOnly, compressor));
+   EXPECT_TRUE(f.IsOpen());
+   EXPECT_FALSE(f.Failed());
+   EXPECT_FALSE(f.Eof());
+   EXPECT_NE(0u, f.FileSize());
+   EXPECT_FALSE(f.Failed());
+   EXPECT_NE(0, f.ModificationTime());
+   EXPECT_FALSE(f.Failed());
+
+   // ensure the memory is as predictably messed up
+#define APT_INIT_READBACK \
+   char readback[20]; \
+   memset(readback, 'D', sizeof(readback)*sizeof(readback[0])); \
+   readback[19] = '\0';
+#define EXPECT_N_STR(expect, actual) \
+   EXPECT_EQ(0, strncmp(expect, actual, strlen(expect)));
+   {
+      APT_INIT_READBACK
+      char const * const expect = "DDDDDDDDDDDDDDDDDDD";
+      EXPECT_STREQ(expect,readback);
+      EXPECT_N_STR(expect, readback);
+   }
+   {
+      APT_INIT_READBACK
+      char const * const expect = "This";
+      EXPECT_TRUE(f.Read(readback, strlen(expect)));
+      EXPECT_FALSE(f.Failed());
+      EXPECT_FALSE(f.Eof());
+      EXPECT_N_STR(expect, readback);
+      EXPECT_EQ(strlen(expect), f.Tell());
+   }
+   {
+      APT_INIT_READBACK
+      char const * const expect = "test!\n";
+      EXPECT_TRUE(f.Skip((test.size() - f.Tell()) - strlen(expect)));
+      EXPECT_TRUE(f.Read(readback, strlen(expect)));
+      EXPECT_FALSE(f.Failed());
+      EXPECT_FALSE(f.Eof());
+      EXPECT_N_STR(expect, readback);
+      EXPECT_EQ(test.size(), f.Tell());
+   }
+   // Non-zero backwards seek
+   {
+      APT_INIT_READBACK
+      char const * const expect = "is";
+      EXPECT_EQ(test.size(), f.Tell());
+      EXPECT_TRUE(f.Seek(5));
+      EXPECT_TRUE(f.Read(readback, strlen(expect)));
+      EXPECT_FALSE(f.Failed());
+      EXPECT_FALSE(f.Eof());
+      EXPECT_N_STR(expect, readback);
+      EXPECT_EQ(7u, f.Tell());
+   }
+   {
+      APT_INIT_READBACK
+      EXPECT_TRUE(f.Seek(0));
+      EXPECT_FALSE(f.Eof());
+      EXPECT_TRUE(f.Read(readback, 20, true));
+      EXPECT_FALSE(f.Failed());
+      EXPECT_TRUE(f.Eof());
+      EXPECT_N_STR(test.c_str(), readback);
+      EXPECT_EQ(f.Size(), f.Tell());
+   }
+   {
+      APT_INIT_READBACK
+      EXPECT_TRUE(f.Seek(0));
+      EXPECT_FALSE(f.Eof());
+      EXPECT_TRUE(f.Read(readback, test.size(), true));
+      EXPECT_FALSE(f.Failed());
+      EXPECT_FALSE(f.Eof());
+      EXPECT_N_STR(test.c_str(), readback);
+      EXPECT_EQ(f.Size(), f.Tell());
+   }
+   {
+      APT_INIT_READBACK
+      EXPECT_TRUE(f.Seek(0));
+      EXPECT_FALSE(f.Eof());
+      unsigned long long actual;
+      EXPECT_TRUE(f.Read(readback, 20, &actual));
+      EXPECT_FALSE(f.Failed());
+      EXPECT_TRUE(f.Eof());
+      EXPECT_EQ(test.size(), actual);
+      EXPECT_N_STR(test.c_str(), readback);
+      EXPECT_EQ(f.Size(), f.Tell());
+   }
+   {
+      APT_INIT_READBACK
+      EXPECT_TRUE(f.Seek(0));
+      EXPECT_FALSE(f.Eof());
+      f.ReadLine(readback, 20);
+      EXPECT_FALSE(f.Failed());
+      EXPECT_FALSE(f.Eof());
+      EXPECT_EQ(test, readback);
+      EXPECT_EQ(f.Size(), f.Tell());
+   }
+   {
+      APT_INIT_READBACK
+      EXPECT_TRUE(f.Seek(0));
+      EXPECT_FALSE(f.Eof());
+      char const * const expect = "This";
+      f.ReadLine(readback, strlen(expect) + 1);
+      EXPECT_FALSE(f.Failed());
+      EXPECT_FALSE(f.Eof());
+      EXPECT_N_STR(expect, readback);
+      EXPECT_EQ(strlen(expect), f.Tell());
+   }
+#undef APT_INIT_READBACK
+   {
+      test.erase(test.length() - 1);
+      EXPECT_TRUE(f.Seek(0));
+      EXPECT_FALSE(f.Eof());
+      std::string line;
+      EXPECT_TRUE(f.ReadLine(line));
+      EXPECT_FALSE(f.Failed());
+      EXPECT_FALSE(f.Eof());
+      EXPECT_EQ(line.length(), test.length());
+      EXPECT_EQ(line.length() + 1, f.Tell());
+      EXPECT_EQ(f.Size(), f.Tell());
+      EXPECT_EQ(line, test);
+   }
+
+   f.Close();
+   EXPECT_FALSE(f.IsOpen());
+   EXPECT_FALSE(f.Failed());
+
+   // regression test for permission bug LP: #1304657
+   struct stat buf;
+   EXPECT_EQ(0, stat(file.Name().c_str(), &buf));
+   EXPECT_EQ(ExpectedFilePermission, buf.st_mode & 0777);
+}
+
+static void TestFileFd(unsigned int const filemode)
+{
+   auto const compressors = APT::Configuration::getCompressors();
+   EXPECT_EQ(8u, compressors.size());
+   bool atLeastOneWasTested = false;
+   for (auto const &c: compressors)
+   {
+      if ((filemode & FileFd::ReadWrite) == FileFd::ReadWrite &&
+	    (c.Name.empty() != true && c.Binary.empty() != true))
+	 continue;
+      atLeastOneWasTested = true;
+      TestFileFd(0002, 0664, filemode, c);
+      TestFileFd(0022, 0644, filemode, c);
+      TestFileFd(0077, 0600, filemode, c);
+      TestFileFd(0026, 0640, filemode, c);
+   }
+   EXPECT_TRUE(atLeastOneWasTested);
+}
+
+TEST(FileUtlTest, FileFD)
+{
+   // testing the (un)compress via pipe, as the 'real' compressors are usually built in via libraries
+   _config->Set("APT::Compressor::rev::Name", "rev");
+   _config->Set("APT::Compressor::rev::Extension", ".reversed");
+   _config->Set("APT::Compressor::rev::Binary", "rev");
+   _config->Set("APT::Compressor::rev::Cost", 10);
+   auto const compressors = APT::Configuration::getCompressors(false);
+   EXPECT_EQ(8u, compressors.size());
+   EXPECT_TRUE(std::any_of(compressors.begin(), compressors.end(), [](APT::Configuration::Compressor const &c) { return c.Name == "rev"; }));
+
+   std::string const startdir = SafeGetCWD();
+   EXPECT_FALSE(startdir.empty());
+   std::string tempdir;
+   createTemporaryDirectory("filefd", tempdir);
+   EXPECT_EQ(0, chdir(tempdir.c_str()));
+
+   TestFileFd(FileFd::WriteOnly | FileFd::Create);
+   TestFileFd(FileFd::WriteOnly | FileFd::Create | FileFd::Empty);
+   TestFileFd(FileFd::WriteOnly | FileFd::Create | FileFd::Exclusive);
+   TestFileFd(FileFd::WriteOnly | FileFd::Atomic);
+   TestFileFd(FileFd::WriteOnly | FileFd::Create | FileFd::Atomic);
+   // short-hands for ReadWrite with these modes
+   TestFileFd(FileFd::WriteEmpty);
+   TestFileFd(FileFd::WriteAny);
+   TestFileFd(FileFd::WriteTemp);
+   TestFileFd(FileFd::WriteAtomic);
+
+   EXPECT_EQ(0, chdir(startdir.c_str()));
+   removeDirectory(tempdir);
+}
+TEST(FileUtlTest, Glob)
+{
+   std::vector<std::string> files;
+   // normal match
+   files = Glob("*MakeLists.txt");
+   EXPECT_EQ(1u, files.size());
+
+   // not there
+   files = Glob("xxxyyyzzz");
+   EXPECT_TRUE(files.empty());
+   EXPECT_FALSE(_error->PendingError());
+
+   // many matches (number is a bit random)
+   files = Glob("*.cc");
+   EXPECT_LT(10u, files.size());
+}
+TEST(FileUtlTest, GetTempDir)
+{
+   char const * const envtmp = getenv("TMPDIR");
+   std::string old_tmpdir;
+   if (envtmp != NULL)
+      old_tmpdir = envtmp;
+
+   unsetenv("TMPDIR");
+   EXPECT_EQ("/tmp", GetTempDir());
+
+   setenv("TMPDIR", "", 1);
+   EXPECT_EQ("/tmp", GetTempDir());
+
+   setenv("TMPDIR", "/not-there-no-really-not", 1);
+   EXPECT_EQ("/tmp", GetTempDir());
+
+   // root can access everything, so /usr will be accepted
+   if (geteuid() != 0)
+   {
+       // here but not accessible for non-roots
+       setenv("TMPDIR", "/usr", 1);
+       EXPECT_EQ("/tmp", GetTempDir());
+   }
+
+   // files are no good for tmpdirs, too
+   setenv("TMPDIR", "/dev/null", 1);
+   EXPECT_EQ("/tmp", GetTempDir());
+
+   setenv("TMPDIR", "/var/tmp", 1);
+   EXPECT_EQ("/var/tmp", GetTempDir());
+
+   unsetenv("TMPDIR");
+   if (old_tmpdir.empty() == false)
+      setenv("TMPDIR", old_tmpdir.c_str(), 1);
+}
+TEST(FileUtlTest, Popen)
+{
+   FileFd Fd;
+   pid_t Child;
+   char buf[1024];
+   std::string s;
+   unsigned long long n = 0;
+   std::vector<std::string> OpenFds;
+
+   // count Fds to ensure we don't have a resource leak
+   if(FileExists("/proc/self/fd"))
+      OpenFds = Glob("/proc/self/fd/*");
+
+   // output something
+   const char* Args[10] = {"/bin/echo", "meepmeep", NULL};
+   EXPECT_TRUE(Popen(Args, Fd, Child, FileFd::ReadOnly));
+   EXPECT_TRUE(Fd.Read(buf, sizeof(buf)-1, &n));
+   buf[n] = 0;
+   EXPECT_NE(n, 0u);
+   EXPECT_STREQ(buf, "meepmeep\n");
+
+   // wait for the child to exit and cleanup
+   EXPECT_TRUE(ExecWait(Child, "PopenRead"));
+   EXPECT_TRUE(Fd.Close());
+
+   // ensure that after a close all is good again
+   if(FileExists("/proc/self/fd"))
+   {
+      EXPECT_EQ(Glob("/proc/self/fd/*").size(), OpenFds.size());
+   }
+
+   // ReadWrite is not supported
+   _error->PushToStack();
+   EXPECT_FALSE(Popen(Args, Fd, Child, FileFd::ReadWrite));
+   EXPECT_FALSE(Fd.IsOpen());
+   EXPECT_FALSE(Fd.Failed());
+   EXPECT_TRUE(_error->PendingError());
+   _error->RevertToStack();
+
+   // write something
+   Args[0] = "/bin/bash";
+   Args[1] = "-c";
+   Args[2] = "read";
+   Args[3] = NULL;
+   EXPECT_TRUE(Popen(Args, Fd, Child, FileFd::WriteOnly));
+   s = "\n";
+   EXPECT_TRUE(Fd.Write(s.c_str(), s.length()));
+   EXPECT_TRUE(Fd.Close());
+   EXPECT_FALSE(Fd.IsOpen());
+   EXPECT_FALSE(Fd.Failed());
+   EXPECT_TRUE(ExecWait(Child, "PopenWrite"));
+}
+TEST(FileUtlTest, flAbsPath)
+{
+   std::string cwd = SafeGetCWD();
+   int res = chdir("/etc/");
+   EXPECT_EQ(res, 0);
+   std::string p = flAbsPath("passwd");
+   EXPECT_EQ(p, "/etc/passwd");
+
+   res = chdir(cwd.c_str());
+   EXPECT_EQ(res, 0);
+}
+
+static void TestDevNullFileFd(unsigned int const filemode)
+{
+   SCOPED_TRACE(filemode);
+   FileFd f("/dev/null", filemode);
+   EXPECT_FALSE(f.Failed());
+   EXPECT_TRUE(f.IsOpen());
+   EXPECT_TRUE(f.IsOpen());
+
+   std::string test = "This is a test!\n";
+   EXPECT_TRUE(f.Write(test.c_str(), test.size()));
+   EXPECT_TRUE(f.IsOpen());
+   EXPECT_FALSE(f.Failed());
+
+   f.Close();
+   EXPECT_FALSE(f.IsOpen());
+   EXPECT_FALSE(f.Failed());
+}
+TEST(FileUtlTest, WorkingWithDevNull)
+{
+   TestDevNullFileFd(FileFd::WriteOnly | FileFd::Create);
+   TestDevNullFileFd(FileFd::WriteOnly | FileFd::Create | FileFd::Empty);
+   TestDevNullFileFd(FileFd::WriteOnly | FileFd::Create | FileFd::Exclusive);
+   TestDevNullFileFd(FileFd::WriteOnly | FileFd::Atomic);
+   TestDevNullFileFd(FileFd::WriteOnly | FileFd::Create | FileFd::Atomic);
+   // short-hands for ReadWrite with these modes
+   TestDevNullFileFd(FileFd::WriteEmpty);
+   TestDevNullFileFd(FileFd::WriteAny);
+   TestDevNullFileFd(FileFd::WriteTemp);
+   TestDevNullFileFd(FileFd::WriteAtomic);
+}
+constexpr char const * const TESTSTRING = "This is a test";
+static void TestFailingAtomicKeepsFile(char const * const label, std::string const &filename)
+{
+   SCOPED_TRACE(label);
+   EXPECT_TRUE(FileExists(filename));
+   FileFd fd;
+   EXPECT_TRUE(fd.Open(filename, FileFd::ReadOnly));
+   char buffer[50];
+   EXPECT_NE(nullptr, fd.ReadLine(buffer, sizeof(buffer)));
+   EXPECT_STREQ(TESTSTRING, buffer);
+}
+TEST(FileUtlTest, FailingAtomic)
+{
+   auto const file = createTemporaryFile("failingatomic", TESTSTRING);
+   TestFailingAtomicKeepsFile("init", file.Name());
+
+   FileFd f;
+   EXPECT_TRUE(f.Open(file.Name(), FileFd::ReadWrite | FileFd::Atomic));
+   f.EraseOnFailure();
+   EXPECT_FALSE(f.Failed());
+   EXPECT_TRUE(f.IsOpen());
+   TestFailingAtomicKeepsFile("before-fail", file.Name());
+   EXPECT_TRUE(f.Write("Bad file write", 10));
+   f.OpFail();
+   EXPECT_TRUE(f.Failed());
+   TestFailingAtomicKeepsFile("after-fail", file.Name());
+   EXPECT_TRUE(f.Close());
+   TestFailingAtomicKeepsFile("closed", file.Name());
+}